The purpose of this study was to investigate the difference between aboriginal and non-aboriginal teenagers performances on the 「Teenager Saying No Scale」, to test their differential degree of able to reject inappropriate request by other people. A total of 51 aborigines and matched 51 non-aborigines were selected under special rules: each matched pair was chosen from the same grade in the same school, with the same gender and the same father educational level. The 「 Teenager Saying No Scale」 contains 16 sub-scales, which combines four different degrees of situations and four different kinds of requesters. The four different degrees of situations are Unpleasant Daily Behavior, Anti-Social Standard Behavior, Minor Illegal Behavior, and Severe Illegal Behavior. The four kinds of requesters are regular friend, family member, best friend, and school bully. Based on the dependent sample analysis of variance design, result showed that aboriginal and non-aboriginal teenagers do not differ in their saying no behaviors. Comparing to non-aborigines, aboriginal teenagers do not hesitate more while being asked by others to do inappropriate behaviors. Besides, these 2 groups of teenagers have the similar response pattern on those 16 sub-scales. The two trivial differences found between aboriginal and non-aboriginal teenagers were variation difference and the relative closeness to family members Detailed discussion and suggestions for future studies were also included.